Retina, Resistive Mesh

View network architecture and outputs

View basic response characterization

**(B)** The function of Horizontal cells is modeled as a resistive
mesh where each conductance takes a value, g_{h}. The signals
from the cone photoreceptors are input to the mesh through
conductances, g_{p}. Each node has a capacitance, C, which
plays a rold in determining the dynamics of the network.
P_{ij} and H_{ij} are the values of the photoreceptor
and horizontal cell signals, respectively.

**(C)** Bipolar (BP) and ganglion cell (RGC) signals are computed
for each cone photoreceptor by simply subtracting the (weighted) value
of H from P at each location (i,j). The BP signal is then converted
to a spike rate to generate an inhomogeneous Poisson spike train,
which represents the output of the RGC.